DealModel: BRB5567FFT7Upper: Flat top m-4 upper w/ ext feed ramps, 7075-T6 aluminum, hard coat anodized black type III class II finish w/ laser etched t-markingsCaliber: 5.56Barrel: 7" 1/9 Twist, Chrome Moly Steel , M-4 feed ramps, Pistol Length Gas System, 1/2x28 threadedFlash Hider. ALL NFA RULES APPLY. from BRB Tactical Systems (Product BRB5567FFT7) |